Year	Number of Firms
1992-01-01	59
1997-01-01	94
2002-01-01	92
2003-01-01	100
2004-01-01	101
2005-01-01	129
2006-01-01	129
2007-01-01	146
2008-01-01	168
2009-01-01	146
2010-01-01	168
2011-01-01	160
2012-01-01	150
2013-01-01	159
2014-01-01	148
2015-01-01	159
2016-01-01	173